Gore-Tex Paclite is a 2-layer fabric, so you get a massive weight saving – and this brings the Marmot Nano in at just 249g (size L), which is some 100g lighter than other jackets of its design. The Nano benefits from two large chest pockets that are placed above any rucksack hipbelts, so you have great easy-access storage space for maps or protection for your hands. They aren’t mesh-lined, but have drilled holes to improve airflow while keeping the worst of any water out. Like many lightweight jackets the body is quite short, and the front zip has an internal stormflap rather than an external one. The Marmot Nano’s hood doesn’t have a wired peak and the peak isn’t as stiff as others that are unwired, so it isn’t quite as good as the best jackets in terms of providing protection in the worst weather. But the hood fit is good and so is the movement. So all that for 249g appears a great option for the hillwalker, but my main issue is that Gore-Tex Paclite is a 2-layer fabric and so once you get any condensation inside you really notice it, and this isn’t so much of a problem in the 3-layer fabrics such as Gore-Tex Active. But Paclite is more packable, lighter and also more durable.

The Marmot Nano has great pockets and reasonable hood for hillwalkers, but the benefits of the minimal weight, small packed size and good durability need to be balanced against the reduced comfort of a 2-layer fabric.